pandas.DataFrame.drop_duplicates

DataFrame.drop_duplicates(subset=None, keep=’first’, inplace=False)

Return DataFrame with duplicate rows removed, optionally only considering certain columns

Parameters:

subset : column label or sequence of labels, optional

Only consider certain columns for identifying duplicates, by default use all of the columns

keep : {‘first’, ‘last’, False}, default ‘first’

• first : Drop duplicates except for the first occurrence.
• last : Drop duplicates except for the last occurrence.
• False : Drop all duplicates.

inplace : boolean, default False

Whether to drop duplicates in place or to return a copy

Returns:

deduplicated : DataFrame